Do my 1920s glass door knobs hold any value?

my house was built in the 1920s and it still has a lot of the original details, including all of the glass doorknobs. are these valuable at all if i sold them on ebay or something? i love them but my husband hates them because they’re stripped inside and could fall off at any second. he’s afraid he’ll get locked in the bathroom when i’m not home, LOL!